Added ListMigrations task
Switched from fancy unicode chars to regular ASCII in List Migrations
Started on RunMigrationsTask
Added support for running/scripting Up migrations
Final fixes to RunMigrations task
Clean up some bogus files
Fix code review feedback
Merge pull request #27 from NuGet/anurse-gal900-migrations

Commands to run/list migrations in ops.
Minor fix: Fixed issue with handling null ops settings in
DeploymentEnvironment